This is a note to let you know that I've just added the patch titled
firmware: raspberrypi: fix possible memory leak in rpi_firmware_probe()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
firmware-raspberrypi-fix-possible-memory-leak-in-rpi_firmware_probe.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7b51161696e803fd5f9ad55b20a64c2df313f95c Mon Sep 17 00:00:00 2001
From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Thu, 17 Nov 2022 15:06:36 +0800
Subject: firmware: raspberrypi: fix possible memory leak in rpi_firmware_probe()
From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
commit 7b51161696e803fd5f9ad55b20a64c2df313f95c upstream.
In rpi_firmware_probe(), if mbox_request_channel() fails, the 'fw' will
not be freed through rpi_firmware_delete(), fix this leak by calling
kfree() in the error path.
Fixes: 1e7c57355a3b ("firmware: raspberrypi: Keep count of all consumers")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221117070636.3849773-1-yangyingliang@xxxxxxxxxx
Acked-by: Joel Savitz <jsavitz@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/firmware/raspberrypi.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -261,6 +261,7 @@ static int rpi_firmware_probe(struct pla
int ret = PTR_ERR(fw->chan);
if (ret != -EPROBE_DEFER)
dev_err(dev, "Failed to get mbox channel: %d\n", ret);
+ kfree(fw);
return ret;
}
Patches currently in stable-queue which might be from yangyingliang@xxxxxxxxxx are
queue-5.4/firmware-raspberrypi-fix-possible-memory-leak-in-rpi_firmware_probe.patch
